:root{--bg:#f6f7f9;--card:#fff;--ink:#14171c;--muted:#596170;--line:#e1e4ea;--accent:#1d5fd1;--on-accent:#fff;--tip:#eef4ff}
@media (prefers-color-scheme:dark){:root{--bg:#101318;--card:#181c22;--ink:#e9ecf1;--muted:#9aa3b0;--line:#283039;--accent:#7aa7ff;--on-accent:#101318;--tip:#17233a}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
header,main,footer{max-width:760px;margin:0 auto;padding:0 16px}header{padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;justify-content:space-between}
header>a{color:var(--ink);text-decoration:none;font-weight:700}header nav{display:flex;gap:14px;font-size:.92rem}header nav a{color:var(--muted);text-decoration:none}
a{color:var(--accent)}h1{font-size:2rem;line-height:1.2;margin:.2em 0 .4em;overflow-wrap:anywhere}h2{font-size:1.2rem;margin:1.2em 0 .5em}
.hero{padding:28px 0 4px}.hero p{color:var(--muted)}
.box{display:flex;gap:8px;margin:16px 0 4px}.box input,.box select{flex:1;min-width:0;font:inherit;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink)}
.box button{font:inherit;font-weight:600;padding:12px 18px;border:0;border-radius:10px;background:var(--accent);color:var(--on-accent);cursor:pointer}
.nomatch{color:var(--muted);font-size:.92rem;margin:8px 0}
.answer,.related,.tip{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;margin:16px 0}.tip{background:var(--tip)}
.crumb{margin:0;font-size:.85rem;color:var(--muted)}.meaning{font-size:1.1rem}.small{font-size:.9rem;color:var(--muted)}
.steps{padding-left:1.3em}code{font:.9em ui-monospace,Consolas,monospace;background:var(--tip);padding:1px 5px;border-radius:5px}.steps li{margin:.5em 0;overflow-wrap:anywhere}
.buy a,.brands a,.codes a{display:flex;flex-direction:column;gap:2px;padding:14px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);text-decoration:none}
.buy span,.brands span,.codes span{font-size:.88rem;color:var(--muted)}.buy{margin:16px 0}
.brands{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.codes{list-style:none;padding:0;display:grid;gap:8px}.related h2{margin-top:0}.related ul{columns:2;padding-left:1.1em;margin:0}
.keygrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin:12px 0}
.keygrid div{border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:4px}.keygrid span{font-size:.85rem;color:var(--muted)}
.keygrid strong{font-size:1.05rem}.keygrid strong.big{font-size:2.4rem;line-height:1.1}
.keys{width:100%;border-collapse:collapse;font-size:.95rem}.keys th,.keys td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);vertical-align:top}
.ad{margin:16px 0;min-height:90px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
footer{color:var(--muted);font-size:.85rem;padding:24px 16px 40px}